How to monitor complex websites?

[Rene Fertig]

Hi Richard.

> We need to monitor this website, but check_http cannot (afaik) send a
> specified User-Agent string. Is anybody aware of another solution, or
> should I create one? If the latter: I was thinking about creating a check
> based on wget, since wget is able to send User-Agent strings and can do
> something with cookies as well. Can someone with enough knowledge on this
> matter tell me if this is doable, or should I walk another path?

check_http version 1.89 (which comes with nagios-plugins 1.4.3) can set a 
User-Agent-String:

 -A, --useragent=STRING
   String to be sent in http header as "User Agent"

But there's a problem with agent-names like "Mozilla/4.0 (compatible; MSIE 
6.0; Windows NT 5.1; .NET CLR 1.1.4322)" - nagios didn't like the semicolon 
';'. It seems, that everything after it is ignored (like a comment).
One solution for this can be to define a own macro (e.g. $USER3$) with the 
escaped semicolon and then use this macro within the agent name, this should 
help.

e.g.:
in resource.cfg:
$USER3$="\;"

in commands.cfg:
command_line    $USER1$/check_http -H $HOSTADDRESS$ -A "Mozilla/4.0 
(compatible$USER3$ MSIE 6.0$USER3$ Windows NT 5.1$USER3$ .NET CLR 1.1.4322)"

But probably you should make your own plugin if you need special cookie 
support.

bye, Rene



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